I'm used to playing bad guys, but even that ending was unpleasant for me. I'm serious about saving that girl.
For me a good end is either for just her getting to live her life and I guess thanks to us, or us somehow getting to live with her and our mechanical girl because we got close.
If there are multiple ends, then I guess neutral is somewhat a status quo where she continues working as a clerk.
We already know the bad end, we don't like the bad end.